SPOONER EXP FARM, WISCONSIN

Period of Record General Climate Summary - Growing Degree Days

Station:(478027) SPOONER EXPERMNT FARM
From Year=1894 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 0 1 25 176 486 738 915 836 553 258 34 1 4021
40 S 0 1 26 202 688 1426 2341 3176 3729 3987 4020 4021 4021
45 M 0 0 11 99 343 588 760 681 408 154 12 0 3056
45 S 0 0 11 109 453 1041 1801 2482 2890 3044 3056 3056 3056
50 M 0 0 4 50 220 440 605 526 275 81 4 0 2204
50 S 0 0 4 54 274 714 1319 1845 2120 2201 2204 2204 2204
55 M 0 0 1 22 125 299 450 374 165 35 1 0 1473
55 S 0 0 1 23 148 448 898 1271 1437 1472 1473 1473 1473
60 M 0 0 0 8 60 177 299 232 86 12 0 0 875
60 S 0 0 0 8 68 245 544 777 862 875 875 875 875
Corn Growing Degree Days
50 M 0 1 18 125 312 471 600 540 339 156 18 0 2581
50 S 0 1 19 144 456 927 1527 2067 2406 2562 2580 2581 2581
M = Monthly Data
S - Running sum of monthly data.
Growing Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
Table updated on Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered
Western Regional Climate Center, wrcc@dri.edu